Grinding-machine.



- 1 PAUER, & E. BAHNIK.

GIHNDING MACHINE.

, APPLICATION FILED APR. 14. 1911.

4 SHEETS-SHEET l.

Patented Jan. 1, 1918.

J. PAUER & E. BAHNIK.

GRINDING-MACHINE.

APPLICATION -F|LED Mill. l4, IQSVH- v Patented 1" 4 shins-shin 2-.

l 93 if JIIIIII IIII If 1 k gn'UM Hou 1*. PAuER & 5.3mm.

mgmome cums.

Armenian men 4m. u. um.

' Patented Jan. 1, 1918.

T6 whom. it may concern;

Be itknown that we,"JosErn PAUER and BAHNIK, citizen of'the United States, residing at Cleveland, in the county of Guyahog'a and Stateof Ohio,.have invented a .certain he: and useful Improvement in Grinding-Machines, of'which the. following v-ide automatic mechaniSm i-or feeding the other-lo is'a full, clear, and exact description, reference being had to the accompanying draw- ?his invention relates ,to machines for accurately finishing the interior of cylindrical bores .b grinding. The: general object of thedevlce is to mores cific.iobje.ct is to pi'ovide venient y lacing the ,work in position to be operated upon and for readily removing the same .whenfinished; Still another object is to..so-;arrange themachine asto proabrading inemberalongthescylinder; Still )jects' a e..t o so arrange the work holding devicefthat itinay-be quickly and accurately. adjusted to bring the work ito the proper position for operating; and also for v adjusting 'the grinding vmember 1 to finish through the same substantially on the line' the work to an accurate size.

Th e manner-of accomplishing the above and other objects will-appear in the follow- 111% ing description which refers to the' drawings, illustratinga preferred embodiment of our invention", andfithe essential characteris- .ti'csare hereinaflerset forthin theclaims'.

N fiRe'ferringto the 'drawing'syFigure l is a :1 perspective view of ou'r'machine; Fig. 2 1s a vertical transverse section through thesame; Fig; 3' is a vertica-l 'sectio'n'o'n an enlargedscale through the. spindle operating mechanism; Fig. 4 is'a horizontal section 4- 4 of Fig.3; Fig.1'5' isia similar section taken on the planei'ndicated' by thehne 55 on Fig. 3-; Fig. 6 is'an'le'nla'rged sectional detail'on the-line of 2; is a section'al detail on the'line' 7' ';7 of F1g. 6;

Figfl8xisan axial sectionat thelower end-of the spindle. 51 )qsribihg the parts referen char -cters; I designates a suitab supporting froine. carrying in horizontal table 2' "from which r segupright ways or guides 3 integral with diagonal supporting 'u ebflike [b aces 4.

.;l 5eneathj .the table 2 we have shown a trgnsy erse 'inoyable slide. 5 1 having 'i T-headed slots 6 engaged by guide 'bars9 hld'by Specification '01 Letter: Iatenti V a plication area r ran, 1917. Serial imam;

provide a comparati 'vely simple eflicient mec 1llIlllSm;fO1 this purpose. A

or. conscrews 7 eitending upwardly; through"elon-- Patented-Jami, iais,

gatedopenin s 8 n the table',' whereby this slide is cape 1e of a comparatively sliglit movement transversely of the "slots 6 and may be. slid throughout its length longitudinally of these slots' and 'entirelyjremoved from thescrew's 7 ,when desired. This slide is arranged to carry the. work mus ard.

ingly is provided with an elongated opening 10 beneath a s'eriesof comniunicati' whereby a grin ing wheel 12 carriedonlga spindle 14 may pass downwardly throngh these openings 10 and 11- and into .-a cylin der'15. for grinding the interior of the sgme tothedc sired size. The machine i s-;part1ou.- larly useful .for. g1 t indingautomobile j cylinders, either for the first finishi-n ;or, for.- regrindin after becoming wo rn.- ores o the cylinder, arranged in one ;casting, maybe successive] W grlndlng wheel by shifting the slide 5.

The spindle His rotatably ,carriedginah vertically movable head having. laterally extending wings 21 embracing the guides =3 and secured thereto by clamping ,--plates 22 held to the wings, 21 .by cap screws 24. This head is given a vertical movementnto feed the grinding wheel longitndinally .;.of the cylinder by means olfa screw 25 extend- The spindle 14 comprises two'ineinbersi' a stifienlng sleeve and aadriying'shafi 32, each extending upwardly, through the head tioned in this sleeve by suitable balli'bearings, such as indicatedati33 at the end. At the lower'end 0mm driving' 's 3:2, we provide a suitablewnonl-ifriction.liear be s ral pa -m tially circular o enlngs 11 n the. ta. 1e .2,

presented to he a ing longitudinally. between. the ways 1.3;;2Hl d embraced bya nut 26 secured bywscrews 27.

"20. The drivingshaftififiiiscentrally posiing'of bronze or like material, est-indicated at 35. a reduced portion fo'rn inga shouldr ittathe upperend of a threaded ashank recei vingi-a cup collar .38, which has a cylindrical-? '01:.-

Below this bea ring the shaft fhas tion adapted to receive thegrinding-w eel; 1;

12 adapted to be clamped thereongbyacollar nut em The cup portion 38 isisl'lrrouiided by the downwardly faced -cupped nextension 39 afthe spindle 14. The cavity ot this cup member is conical; shaped to retain 1 lubricant under rotation of high speed. fAt

the uppel-"end the'bearing' is shown 'asc'arried in a removable collar"34 threadedonto the upper end of the sleeve gflyiwhile the shaft carries a pulley"3'6 threaded ontoa' reduced portion andsecured a nut 37 for driving the grinding .wheei 12 non-ro-::

tatably secured to the lower end of the shaft 32 which is thus stifiened by. the sleeve'30; 5 The sleeve and shaft, comprising the spindle, are adapted to beadjusted to move ing blocks 42 and 43 at their 3pm and lower ends respectively, and these locks are pro vided with elongated'openings 44 embracing the upper extension of the spindlein' these openings To maintain the parallelism of the axis of I the spindle with that of 'the sleeve. 40, we provide carrying blocks 46 and 47, each pivoted on 'the'ends of a vertical stud-'48 and extending around and closely embracing the extension of thesleeve.

Both the upper and towel blocks 46 and 47 are provided with a segmental ftoothed portion '50'a'dapted to engage the upper and lower 'ends52 and 53 of a verticalfspindle 54 having it'sbe'aring's' in the blocks 42 and- 43andhaving teeth cutin its ends [to form pinio'ns engaging these segmental port ons. .The rotation of this rod 54 causes the blocks 46 and 47 to swin'gabout the ends of'the stud 48 as-pivots. The toothed ends of the .rod 54 preferably" closely fit the teeth 50, so that 'an accurate adjustment of the axis of the spindle with relation to the axis of thetsleeve may be obtained. To secure such adjustment and t0'-in sure holding the :gindle-i'n any position .given'it', we" have 40 an outwardly extending flange on a head58 of the sleeve 40. The worm 55 is shown as;

having an angular head 57 by which it may be rotatedto rotate the rod 54 andadjust the axis of the s'pindle'with relation to the-axis of the sleeve 40-. i

The reason for adjusting the axis of the spindle-with relation to the sleeve-40. is to bring the grinding surface of the Wheel 12 59 into contact with the cylinder to be fin ished. The grinding of the cylinders is ac complished'bycausing the axis of the raprinding wheel to; revolve finidly rotating D a circular pati-in contact "Vllill then-nner- 55 by the screw 25 heretofore described;

0 motion about .the axis of the cylinder, eansri hery of the grinding wheelto the surface the cylinder by moving the axis-of the issues r v q own a worm mounted in'bearings56 on surface ofthe cylinder, at ;the same time advancing the: wheel longitudinally of the cy1-'. inder. "The advancing movement is caused To-give the axis of -the wheel itsrevolving.

spindle with relation the sleeve 40, we provide gearvteeth60cmagflange head 58 of the sleeve'40. "Meshing with these teeth is atpinion'68 surrounding a shaft 63 and I resting one web 64 integral with the head. Thispinion is provided with clutch. teeth 65 engaged by corresponding teeth on a movable clutch member 66 splined to the shaft 63 so that it maybe driven thereby in any p si n. a ne fi e This dut h m n 15 or may bet rown in and out'of engage, ment with the teeth of the pinion by a yoke lever. 67 having "pins 68 engaging a ci'rcurm ferenti'al groove 69. The. shaft 63*is pro-' vided' with removable. hearings in the web 64' and i'n'a web 61 wherebyit is guided by' the head to insure'proper engagement of the gear teeth 60 and pinion 62,.while 1a bearin carried by a bracket 90, embraces this sha t at the lower end. Q 1. 35-

To rotate the spindle 32'a11d the wheelflZ; we may use a belt running over the'pujlley 36 at the upper end ofthe shaft32, as h ere tolfore described. This belt, 75 be". brought to the pulley 36 froinany- 'directi{iii' and be arr-angedto remain tight by a Stilt-g able belt, tightener, allowing for the'revolving movementof the pulley, while causing its rotation, but we'prefer to leadthe belt'75 1- laterally between theuprights 4 and Teach" side of thescrew'25 and then" upwardly, guiding it by" flanged pulleys; 77 carried on .-bracket's78 secured to the liead,'thus causing" the'beltjto be presented to-thepulley 36M the proper .angle regardless O'f th eposition of-the head.

W'e have shown, as'a means 'for rot'ating the shaft 63 and thescre'iv25. avbelt 80 running over a stepped pulley-"81cm a shaft 82* carried' in bracket 83 secured to the'top' of the uprights 4.. On the inner end of=-theshaft82 we provide a bevel gear 85'meshing \vithbevel gears 86 and 87 'at the upper and lower-sides respectively" and each loosely mounted -on ash'aft-like extensiom of the 1 "screw 25. .The-be v-el gear 87 is rigid with a spurgear 88 which meshes with an idler 89 inturn driving a gear-90 rigid on the up per endof the shaft 63.- Thus thegear unit 87 -88 is driven continuously by the belt. 80, causing aconstant rotation of theshaft. 63,- while the revolution of the grinding wheel. spindle may bestopped or started by actuating the clutch lever 67 connecting the. shaft 63 with the gear- 60, as heretofore described. Y The upper l ievel gear 86.is for-thepurpose of driving the screw 25 in one direction only and may be broughtsinto driving con, nection by means of a-splined clutch; member. 92 having r-teeth atopposite sides dapted to engage either-the teeth 93 (if-the grim 86 or the teeth 94 of .the gea ;r.87,. The clutch member is rotatably embraced; bytifyoke arm 95 for causing this inovelnentandthe yoke arm is. in 'turn connected witha vertically T80 s'iiedtive of its' The ningll intlie platefiisshown as v "COmbIIIBt-IOII ofa housing, a rotatable cylin-"n- :der thereim a spindleextending through' the cylinder withits'axis parallel to that ofxthe egl-inaeewrweu semen to'the axis of the s sew-4U teem e mevement" of the wheel, their) in'g thecylinder; is movable in both directionsflthe slots -8 providing for i ateialxnotfementand the enfagement of the elot's-Witlith longitudina strips -9 allow-.

go iifg leng itudinalfmovement. To'cau'sefsuch: niovelneiitwithoon'sid'emble' mumthere my piotidi'ng" for adj iistment, we have shown A ti piii'ibn 1'05**engag ing-a rack'106 at the" lower side of the plate 5, The pinion is car mew-es male-107 andada tedto-be' .e l G- I' "jtive simple machine forgrinding cylinders [with a single g'rindin zwhehelgwen three" movements; namely, a rotatiye' movement .on its own 'eenten; a revolving movement" of theaxis thereof aboutthe axis of the cyliiii us," islm 'tlbp" remains in en'%agement with thefslot hnd ma-y move the ,1) W irre "bositi'onfl finnedffitliree partially tirculaltsopexiing; 'eaclkof whic h isas large or largeif 'than deft gmahh, thus giving access to .c- 1i l the-'d'ylihd i diorehlz 'either side of .theone beings perated upon, for purposes of cal perlng cleaning, etc. I

Briefly the o eration of our device is as follows: The cy inderf15 is secured by capscrews' to a plate 5, preferably removed from the machine. The late is then laced in 0- v v P p p combination of a housing, a rotatable cylinsition upon the slide bars 9 and then the hand wheels 108 and 111 are actuated to position the same approximately centering one" The screws 7 are then 7 of the c' linders. 56- tightene A suitable 'grindinig wheel for the cylinder torbeoperated upon; heving' been fitted tothe lower endofthe spindle,

thebelts 50 llild' 'stamdktlle head and grinding wheelare lowered manually- 6'0 shifting the clutch 92 from itscontrolling rods into. engagement with the bevel gear,

causing a rotation of the screw 25' in a d1rec.-.-

As the grindihg'wheel is thus brought into #5 theeud of the 'cylinder,'the ,spindle is ad tion corresponding tozsuch movement.

mum. Mummies? "idea mu s :mf 51;

'- h th .03

92% stop'or reverse-the diihdliigfjwheelmeaching "alpra ie my be time" by-"s;

s'imple and convenient means for ceusingellwe claim isc simultaneously including a lo justed by sms ,of the and pinion. dd.5 p i efieefi e g rness: thewhee Mamie-1 1 'fi fit h'flw semen thrownlint eengagement to causethe re vpli s; tion of the; grinding wheeL'thIJsstarting the .i m operation. Theamount of metal tobe removed'dur'ingjone movement of the wheel al on'githej cylmder'having been determined; the clutch 92 is again tocontinue v the downward movement. The Llowereoli lar is adjusted [to accommodate ,f-the" length dnhe c linder, and up n. ma i-i d;

ingwheel reaching the "lower' end of the same',1the" web 71 engaging thiscollarfsh'ifts the clutch 92 into engagementjwith-the.lower.n bevel gea'ra87, thus. reversing, the motion of the screw and Withdra-Wing tIie [wheel'- 14.

Thisfo ration ma be'fcontinliedj several times or each? cylinder until; the rop'er amount ofmetal has been remove Yt ene-: ocssive cylinders being pre'sen to the grinding wheel by operatingthe handle I08 after-slightly loosening the saws no shift the 'plate 5 the 'proper distanee rf f": ;It-will be seen 'm -the"ff oregoing def seri tion that we I have proiided' a compara- ,derand a progressive movement-longitudi nall'y thereof, and that we have prov deda of; these;- movements' in connection-with controlling such means. Y a Having'thus described ourinventiom'what 'eas'ily operated partially automatic devices .1. Ina cylinder sinas jsshs -im m cylindenbearings at each-end of the cylinder movably connected therewith, 0. Ion "tudinal 11o shaft carried by the cylinder an geared. with said bearings for simultaneously shift.- ingjthe same, and means for turningsaid last named shafta 2. In a cylindengrinding machine, the

der therein, end members rigid with the cylinder, a" s indleextending through said-- members wit its axis vparallel to the cylinder,. bearings embracing the spindle at separated points, means carried b the end members for-laterally shifting Stud bearings 'tudinal member geared to the b'earings, a =a screw foractuatin .the longitudinal member to simultaneou Limo ve said members.

' 3.: In- .a fcylmder; grinding machine, the Iwork supgort, guideways movable alo' 'way's, aspindle carried by s ai sai gui 

